[T3] 2 FI fuel pumps

[Jim Adney]

On 28 Jun 2012 at 13:26, Brion Sabbatino wrote:

> I have come to the conclusion that the fuel sold today that contains
> ethanol can cause a significant quantity of water to accumulate in the
> bottom of a gas tank. This seems to take several months of aging.
> Changing temperatures might be contributing to the rapid separation of
> petroleum fuel and ethanol fuel and water. 

That's a reasonable hypothesis, but the car I just drove to Co. 
Springs was stored for 2 years in my unheated garage. I parked it 
with a nearly full tank, which was about 3/4 full when I got it back 
out. It started right up with the 2 year old gasohol, and ran 
perfectly for the 2300 mile trip. I don't think there was a 
significant amount of water in there.

My only problems were a couple of very small gas leaks, including one 
that I've still not found. I can only smell it....  ;-p

> The changing dew points seem to accelerate formation of water droplets
> which then contaminates the tank.

This, along with changing barometric pressure, is absolutely true, 
but it applies to any kind of fuel.  


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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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